I was able to extract the zip file and there were like 7 .safe.old files and one .SAFE file , I converted that into .BAK and while trying to restore that file, it's throwing this error
"Unable to create restore plan due to break in the LSN chain"

The error does not necessarily mean the back up was not Full and only differential. There are a lot of possible causes for this particular error. One potential solution, which was repeated on several sites, is linked below.